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POST UTME DELSU 2024 Physics | Objective

Are you preparing for POST UTME DELSU exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. What is the magnitude of the force acting on the particle?

A. 8 N

B. 12 N

Correct C. 16 N

D. 20 N

Correct Answer: C

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Question 2

A capacitor of capaci\tance 10 μF is connected across a 12 V battery. What is the charge stored on the capacitor?

Correct A. 120 μC

B. 1200 μC

C. 12 μC

D. 1.2 μC

Correct Answer: A

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Question 3

A circuit consists of a 2 Ω resistor and a 4 Ω resistor connected in series. What is the equivalent resis\tance of the circuit?

Correct A. 6 Ω

B. 3 Ω

C. 4 Ω

D. 2 Ω

Correct Answer: A

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Question 4

A body of mass 5 kg is moving with a velocity of 10 m/s. What is its kinetic energy?

A. 250 J

Correct B. 500 J

C. 750 J

D. 1000 J

Correct Answer: B

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Question 5

A 10 μF capacitor is charged to a potential difference of 12 V. What is the energy stored in the capacitor?

Correct A. 144 μJ

B. 1440 μJ

C. 14.4 μJ

D. 1.44 μJ

Correct Answer: A

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Question 6

A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its pressure to increase. Which of the following best describes the change in the gas's volume?

A. The volume of the gas decreases.

Correct B. The volume of the gas increases.

C. The volume of the gas remains cons\tant.

D. The volume of the gas becomes negative.

Correct Answer: B

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Question 7

A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle's speed is 4 m/s, what is its kinetic energy?

A. 10 J

Correct B. 20 J

C. 30 J

D. 40 J

Correct Answer: B

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Question 8

A radioactive sample has a half-life of 5 years. If the initial activity of the sample is 100 Bq, what is its activity after 10 years?

A. 10 Bq

B. 20 Bq

Correct C. 50 Bq

D. 100 Bq

Correct Answer: C

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Question 9

A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. What is its angular frequency?

A. 0.5 rad/s

B. 1 rad/s

Correct C. 2 rad/s

D. 4 rad/s

Correct Answer: C

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Question 10

A heat engine operates between two temperatures of 300 K and 400 K. If it has an efficiency of 30%, what is its Carnot efficiency?

A. 20%

Correct B. 30%

C. 40%

D. 50%

Correct Answer: B

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Question 11

A particle of mass $m$ is moving in a circular path of radius $r$ with a cons\tant speed $v$. If the particle experiences a centripetal force $F_c = \frac{mv^2}{r}$, what is the work done by this force as the particle moves through an angle $\theta$?

A. 0 J

Correct B. \frac{1}{2}mv^2

C. mv^2

D. -\frac{1}{2}mv^2

Correct Answer: B

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Question 12

A block of mass $m$ is attached to a horizontal, massless spring with a spring cons\tant $k$. If the block is displaced by a dis\tance $x$ from its equilibrium position and released from rest, what is the maximum speed $v_{max}$ of the block as a function of $x$?

Correct A. \sqrt{\frac{kx^2}{m}}

B. \sqrt{\frac{kx}{m}}

C. \sqrt{\frac{mx^2}{k}}

D. \sqrt{\frac{mx}{k}}

Correct Answer: A

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Question 13

A particle of mass $m$ is moving in a straight line with a velocity $v$. If the particle experiences a force $F = kv$, where $k$ is a cons\tant, what is the work done by this force as the particle moves through a dis\tance $x$?

Correct A. \frac{1}{2}kx^2

B. \frac{1}{2}mv^2

C. kx^2

D. -\frac{1}{2}kx^2

Correct Answer: A

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Question 14

A particle of mass $m$ is moving in a circular path of radius $r$ with a cons\tant speed $v$. If the particle experiences a centripetal force $F_c = \frac{mv^2}{r}$, what is the kinetic energy of the particle?

Correct A. \frac{1}{2}mv^2

B. \frac{1}{2}m^2v^2

C. \frac{1}{2}mv^4

D. \frac{1}{2}mv^6

Correct Answer: A

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Question 15

A block of mass $m$ is attached to a horizontal, massless spring with a spring cons\tant $k$. If the block is displaced by a dis\tance $x$ from its equilibrium position and released from rest, what is the potential energy of the block as a function of $x$?

Correct A. \frac{1}{2}kx^2

B. \frac{1}{2}mx^2

C. \frac{1}{2}kx

D. \frac{1}{2}mx

Correct Answer: A

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Question 16

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?

A. 10 m/s^2

Correct B. 12 m/s^2

C. 15 m/s^2

D. 20 m/s^2

Correct Answer: B

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Question 17

A block of mass 5 kg is placed on a frictionless surface and connected to a horizontal spring with a force cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, what is the maximum speed of the block?

A. 2 m/s

B. 4 m/s

Correct C. 6 m/s

D. 8 m/s

Correct Answer: C

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Question 18

A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 12 V. If the dis\tance between the plates is doubled, what is the new capaci\tance?

A. 5 μF

B. 10 μF

Correct C. 20 μF

D. 40 μF

Correct Answer: C

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Question 19

A gas is confined to a cylinder of volume 2 m^3 at a temperature of 300 K. If the temperature is increased to 400 K, what is the new volume of the gas?

A. 2.5 m^3

B. 3 m^3

C. 3.5 m^3

Correct D. 4 m^3

Correct Answer: D

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Question 20

A beam of light is incident on a prism at an angle of 30°. If the angle of re\fraction is 20°, what is the angle of deviation?

A. 10°

Correct B. 20°

C. 30°

D. 40°

Correct Answer: B

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Question 21

A 2.5 V battery is connected in series with a 10 Ω resistor and a 5 Ω resistor. What is the total resis\tance of the circuit?

A. 15 Ω

Correct B. 20 Ω

C. 25 Ω

D. 30 Ω

Correct Answer: B

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Question 22

A beam of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?

A. 20°

Correct B. 25°

C. 30°

D. 35°

Correct Answer: B

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Question 23

A 50 Hz AC voltage is applied across a 100 Ω resistor. What is the rms value of the current flowing through the resistor?

A. 0.5 A

Correct B. 1 A

C. 1.5 A

D. 2 A

Correct Answer: B

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Question 24

A 2 kg object is moving with a velocity of 5 m/s. What is its kinetic energy?

A. 10 J

Correct B. 20 J

C. 30 J

D. 40 J

Correct Answer: B

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Question 25

A 10 μF capacitor is connected in series with a 100 Ω resistor. What is the time cons\tant of the circuit?

A. 0.1 s

Correct B. 0.5 s

C. 1 s

D. 2 s

Correct Answer: B

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